Abstract
Supporting diverse Quality of Service (QoS) performance for heterogeneous data flows generated by multimedia applications has been a challenging issue that is not fully addressed in the Internet. Software Defined Network, which decouples data forwarding and network control, offers a promising approach to QoS guarantee of multimedia flows in the future Internet. However, the currently available QoS mechanisms proposed for SDN have not fully considered the diversity in performance requirements of multimedia data flows. In order to tackle this challenge, we propose a hybrid scheduling scheme in this paper to combine priority queueing with Packet General Processor Sharing (PGPS) algorithm to provide QoS guarantee for multimedia applications in SDN. We apply network calculus to develop modeling and analysis techniques to evaluate the QoS performance of the proposed scheduling scheme. Both analytical and numerical results obtained in this paper show that the proposed scheme can provide QoS guarantee for meeting diverse requirements of multimedia applications.
Highlights
Software Defined Network (SDN) is an emerging networking paradigm that is expected to have a significant impact on fundamental architecture of the generation networks
The centralized control plane and flow-based packet forwarding enabled by SDN offer a promising approach to providing the required Quality of Service (QoS) guarantee to support multimedia applications in the future Internet
In order to address this challenging issue, we propose a hybrid scheduling scheme that combines priority queues and Packet General Processor Sharing (PGPS) scheduling for QoS guarantee of multimedia data flows in SDN
Summary
Software Defined Network (SDN) is an emerging networking paradigm that is expected to have a significant impact on fundamental architecture of the generation networks. The centralized control plane and flow-based packet forwarding enabled by SDN offer a promising approach to providing the required QoS guarantee to support multimedia applications in the future Internet. Encouraging progress toward QoS provisioning in SDN has been made, the aforementioned works have not fully addressed the challenges brought in by the heterogeneous traffic flows of multimedia applications with diverse performance requirements. The QoS control in SDN, queuing and scheduling mechanisms in OF switches should be able to meet the performance requirements of heterogeneous multimedia data flows and achieve high utilization of network resources by fairly sharing spare bandwidth among best-effort flows. Application of network calculus in this paper makes the developed modeling and analysis techniques general and flexible to be applicable to QoS control in OF switches with diverse implementations to support various heterogeneous data flows of multimedia applications.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
